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Quick Fuel Pump Question

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Old Aug 9, 2008 | 10:23 AM
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matthnatow
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Quick Fuel Pump Question
Does the in-tank fuel pump for a 1984 F250 w/ 460 run constantly while the engine is running or does it run for a bit, then stop, then run for a bit, then stop? In other words, does it run all the time or alternate from on to off?
 
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Old Aug 9, 2008 | 11:47 AM
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WAExplorer
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It runs all the time. It uses a return line w/regulator by the carburator.
 
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Old Aug 9, 2008 | 05:27 PM
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Runs as long as there is sufficient engine oil pressure to keep the oil pressure switch closed.
 
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Old Aug 12, 2008 | 12:28 AM
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ClydeSDale
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Here's the wiring diagram for the 460 "Hot Fuel Option".



It's a little fuzzy at 300% zoom but readable.
 
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Old Aug 12, 2008 | 06:02 PM
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Thanks for the diagram, that helps a bunch.
 
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Old Aug 12, 2008 | 11:41 PM
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After I thought about it a bit ..... how about this:
Name: 1983 Fuel ElCT-1 wiring diagram.gif Views: 331654 Size: 56.8 KB
 
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Old Aug 13, 2008 | 01:01 PM
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Wow, much better! thanks alot
 
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Old Sep 7, 2008 | 07:36 PM
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Here's another wiring diagram from the 1984 Ford Truck Shop Manual - Engine.

 
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